Shelf



FIG. 1 is a front view of a shelf embodying my new design, shown brokenaway to indicate indeterminate length;

FIG. 2 is a side view taken from the left of FIG. 1, the side oppositebeing a mirror image thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear view thereof.

The ornamental design for a shelf, substantially as shown and described.